main()
{
    int a[9],ii=0,i,a1,a2,a3,a4,b1,b2,b3,b4,flag;
    for(i=1;i<=8;i++)
    {
        printf("Please enter [%d] number:",i);
        scanf("%d",&a[i]);
        ii+=a[i];
    }
    printf("**********\n");
    if(ii%2)
    {
        printf("Sorry they can't be constructed required cube!\n");
        exit(0);
    }
    for(flag=0,a1=1;a1<=8;a1++)
    for(a2=1;a2<=8;a2++)
    if(a2!=a1)
    for(a3=1;a3<=8;a3++)
    if(a3!=a2&&a3!=a1)
    for(a4=1;a4<=8;a4++)
    if(a4!=a3&&a4!=a2&&a4!=a1)
    for(b1=1;b1<=8;b1++)
    if(b1!=a4&&b1!=a3&&b1!=a2&&b1!=a1)
    for(b2=1;b2<=8;b2++)
    if(b2!=b1&&b2!=a4&&b2!=a3&&b2!=a2&&b2!=a1)
    for(b3=1;b3<=8;b3++)
    if(b3!=b2 &&b3!=b1&&b3!=a4&&b3!=a3
       &&b3!=a2&&b3!=a1)
       for(b4=1;b4<=8;b4++)
       if(b4!=b2&&b4!=b1&&b4!=b3&&b4!=a4&&
       b4!=a3&&b4!=a2&&b4!=a2&&b4!=a1)
       if(a[b1]+a[b2]+a[b3]+a[b4]==ii/2
       &&a[a1]+a[a2]+a[b1]+a[b2]==ii/2
       &&a[a1]+a[a4]+a[b1]+a[b4]==ii/2)
       {
        flag=1;goto out;
       }
       out:
       if(flag)
       {
        printf("They can be constructed required cube as follow:\n");
        printf("         /%2d............../%2d\n",a[a4],a[a3]);
        printf("      %2d/................%2d/|\n",a[a1],a[a2]);
        printf("        |   |              |  |\n");
        printf("        |   |              |  |\n");
        printf("        |   %2d|             |   |%2d\n",a[b4],a[b3]);
        printf("        /...............-/\n");
        printf("        %2d/..............%2d/\n",a[b1],a[b2]);
       }
       else printf("Sorry they can't be constructed required cube!\n");
}
